Synthesis of pipelineable wave digital filters by scattering matrix factorization

Eiji Watanabe, Yoshiaki Mogi, Akinori Nishihara

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper proposes a synthesis of low-sensitivity digital filters which are pipelineable and have simple structures. Their sensitivity characteristics are similar to those of wave digital filters. The synthesis of these filters is attained by factorizing paraunitary scattering matrices derived from given z-domain transfer functions without referring to analog filters. The synthesized structures are the T-cascade connection of fundamental sections which are constructed by using series and parallel sections of wave digital filters. The proposed synthesis method can realize any given IIR transfer function, while previous methods which synthesize T-cascaded structures can realize only the amplitude response of any given transfer functions of addition, the method can realize the transfer functions of which the order of their denominator is higher than that of their numerator including FIR transfer functions.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalElectronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi)
Volume75
Issue number7
Publication statusPublished - 1992 Jul

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Digital filters
Factorization
Transfer functions
Scattering
Cascade connections
Wave filters

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

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